Support JDK-20 builds on Jenkins

[reta]

Is your feature request related to a problem? Please describe

JDK-19 is superseded by JDK-20

Describe the solution you'd like

Make JDK-20 available on Jenkins so we could start using it in Gradle checks.

Describe alternatives you've considered

N/A

Additional context

Depends on opensearch-project/OpenSearch#6792

[reta]

@peterzhuamazon I wil pick this one up if you don't mind

[peterzhuamazon]

Hi @reta are we ok to wait until JDK21 release?
JDK21 is LTS and it will be released on September.
Thanks.

[reta]

Hi @reta are we ok to wait until JDK21 release?

I think we could in general, but we need to:

• update bundled JDK to JDK-20 (we cannot supply unsupported version)
• make sure all test passes under JDK-20

I will update the issue shortly if the JDK-20 is really needed on CI, thanks!

[reta]

@peterzhuamazon I just did test run against JDK-20 and it seems like we do have some code paths that use unsupported APIs (like Thread::resume, at least in tests), I think it would be beneficial to add JDK-20 support to CI and be ready for JDK-21

[peterzhuamazon]

So @reta we need to ship JDK20 in bundle right now?

[peterzhuamazon]

Please also send a PR to change JDK on opensearch-ci so we can do the deployment of new AMIs.

[reta]

So @reta we need to ship JDK20 in bundle right now?

I think it would be better to do it now, since it does require code changes sadly

[peterzhuamazon]

Hi,

I will work with @reta on this.
Once @reta inform that core switch 3.0.0 to 20, this change will go in then.

• Support JDK-20 builds on Jenkins #3457
• Support JDK-20 builds on Jenkins opensearch-ci#280

Thanks.

[peterzhuamazon]

After offline conversation seems like we have to build the image beforehand so the test of this PR can pass:
opensearch-project/OpenSearch#7344

Will start that on next week.

Thanks.

[reta]

@peterzhuamazon confirming successful Jenkins builds (Gradle check) [1]:

Using an external service to test the repository-s3 plugin
=======================================
OpenSearch Build Hamster says Hello!
  Gradle Version        : 8.1.1
  OS Info               : Linux 5.15.0-1036-aws (amd64)
  JDK Version           : 20 (Eclipse Temurin JDK)
  JAVA_HOME             : /usr/lib/jvm/temurin-20-jdk-amd64
  Random Testing Seed   : 47DB33C7350F49DD
  In FIPS 140 mode      : false
=======================================

[1] https://build.ci.opensearch.org/job/gradle-check/15791/console

[peterzhuamazon]

@peterzhuamazon confirming successful Jenkins builds (Gradle check) [1]:

Using an external service to test the repository-s3 plugin
=======================================
OpenSearch Build Hamster says Hello!
  Gradle Version        : 8.1.1
  OS Info               : Linux 5.15.0-1036-aws (amd64)
  JDK Version           : 20 (Eclipse Temurin JDK)
  JAVA_HOME             : /usr/lib/jvm/temurin-20-jdk-amd64
  Random Testing Seed   : 47DB33C7350F49DD
  In FIPS 140 mode      : false
=======================================

[1] https://build.ci.opensearch.org/job/gradle-check/15791/console

Note this only applies to the gradle check as they are using AMI directly.
The build process still not onboard with images as the docker builds still ongoing.
Thanks.

[peterzhuamazon]

All jdk20 docker images and amis updated now.
Thanks.

[peterzhuamazon]

https://build.ci.opensearch.org/blue/organizations/jenkins/distribution-build-opensearch/detail/distribution-build-opensearch/7931/

We are missing the macos update to JDK20 and is really confused why Windows still shows issues not finding JDK20.
Need researching.

Thanks.